Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from K & K Truong. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
K & K Truong, operating as Truong's Heating & Air Conditioning, is an HVAC contractor in Braintree, Massachusetts. BBB lists the company as accredited with an A+ grade, and says it has been in business for 18 years. Its listed services are installation, repair, and maintenance, with Massachusetts license 4093 attributed to the Office of Public Safety and Inspections. [The profile does not establish current license verification.] People who hired the company describe hands-on heating and cooling work, including furnace and air-conditioning replacement, boiler replacement, central-air installation, multi-zone HVAC systems, ductwork, and ongoing service. In reviews from 2014 through 2019, customers repeatedly mention prompt responses, detailed planning, clean work sites, staying on budget, and returning quickly when a system needed attention. One homeowner described replacing two boilers and adding forced-air heating and cooling, while another described a four-zone new-construction installation. The written reviews are dated, so they describe past jobs rather than current performance. BuildZoom shows 5.0 stars from 18 ratings and 34 projects, while also labeling its license information as not verified. Before booking, confirm the current status of license 4093, the exact scope of any ductwork or sheet-metal work, the maintenance terms, and the timeline for follow-up service. They are a reasonable fit for homeowners or general contractors seeking an HVAC company with a long local review history and experience on substantial heating and cooling installations. Ask for a current license check, a detailed written proposal, and references for work similar to yours.
After having multiple issues with my furnace and AC including ceiling leaks, Nathan and his crew came in and replaced everything in 2 days. Price is reasonable and they work very fast, are respectful and leave the job site clean. I highly recommend them!
We were very worried about doing the major project of taking out the huge radiators in a our smaller house and putting in Air conditioning. We were so lucky to have had Mr. Truong do the service! He and his crew were super fast with the installation, stayed on budget, and was very good with clean up after the job. Communication, customer service, reliability A++++++
Nathan and his company has been doing work for my company for years and has proven to be a person of integrity and reliable. He is there when he says he is going to be there and the job gets done in the time frame that he lays out. He is professional in all areas particularly in the performance and quality. We could never go wrong with Truong!
Nathan and his crew has worked on several of our projects. As a GC, they're the only HVAC contractor we trust. They finish on time and on budget! On follow up services, they're fast, reliable and knowledgeable. Highly recommend.
They are very responsible and professional! We had a small project and they were just as great! Would recommend them for sure!
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1 change recorded — last scanned Sep 9, 2026.
Transparent diagnostics5.0
Repeat, years-long customers5.0
Decades-long customers5.0
Honest, no-upsell service5.0
Rapid response5.0
